Maintenance of ecosystem health is the primary focus of a sound ecological restoration. Yet methods involved in quantifying and assessing the health level remain a challenge to the ecological community. In this study, we used the hill and gully area of the Loess Plateau, Inner Mongolia, where soil and water erosions continue to be responsible for much of the environmental problems in eastern China because of its fragility and long disturbance history. In this study, we developed an assessment method of indi...